[英]Not able to send messages to RabbitMQ using Spring
我正在嘗試使用Spring 4
向位於我的localhost
上的RabbitMQ
發送消息,但是由於某種原因該消息沒有被發送,並且我也沒有收到任何錯誤。 在我看來,我的Spring配置( beans.xml
)不正確。
請指導。
pom.xml
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>4.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.0.2.RELEASE</version>
</dependency>
<!-- RabbitMQ -->
<dependency>
<groupId>org.springframework.amqp</groupId>
<artifactId>spring-rabbit</artifactId>
<version>1.5.5.RELEASE</version>
</dependency>
</dependencies>
beans.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:c="http://www.springframework.org/schema/c"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:flow="http://www.springframework.org/schema/webflow-config"
xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:jms="http://www.springframework.org/schema/jms"
xmlns:lang="http://www.springframework.org/schema/lang"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:rabbit="http://www.springframework.org/schema/rabbit"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/webflow-config http://www.springframework.org/schema/webflow-config/spring-webflow-config.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee.xsd
http://www.springframework.org/schema/jms http://www.springframework.org/schema/jms/spring-jms.xsd
http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd
http://www.springframework.org/schema/rabbit http://www.springframework.org/schema/rabbit/spring-rabbit-1.5.xsd">
<bean id="helloWorld" class="com.study.jms.HelloWorld">
<property name="message" value="Hello World (Spring-RabbitMQ)!" />
</bean>
<rabbit:connection-factory id="rabbitConnectionFactory" host="localhost" username="guest" password="guest" port="5672"/>
<rabbit:template id="amqpTemplate" connection-factory="rabbitConnectionFactory"/>
<rabbit:admin connection-factory="rabbitConnectionFactory"/>
<rabbit:queue name="helloQueue"/>
</beans>
Main.java
public class Main {
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
HelloWorld helloWorld = (HelloWorld) context.getBean("helloWorld");
//send message
System.out.println("Sending message....");
AmqpTemplate template = context.getBean(AmqpTemplate.class);
template.convertAndSend(helloWorld.getMessage());
}
}
HelloWorld.java
public class HelloWorld {
private String message;
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
}
您需要告訴RabbitMQ如何路由消息。
由於您不是在創建交換或將隊列綁定到交換,因此可以使用隊列名稱路由到默認交換( ""
)。
您需要將模板上的routingKey
屬性( routing-key
屬性)設置為隊列名稱,或者需要將其包括在convertAndSend
調用中:
template.convertAndSend("", "helloQueue", helloWorld.getMessage());
RabbitMQ只是丟棄已成功傳遞到交換但未路由到任何隊列的消息。
請參閱RabbitMQ教程以了解交換,路由鍵等。
Spring AMQP示例存儲庫具有教程的Spring Boot版本。
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